douyun1972 2017-06-27 20:06
浏览 32
已采纳

按PHP中的值对多维关联数组进行排序

I have this set of array:

Array(
    [day_1] => Array(
        [3744] => Array(
            [time_start] => 11:00
            [time_end] => 12:00
            [notes] => 
        )
        [3746] => Array(
            [time_start] => 08:00
            [time_end] => 11:00
            [notes] => 
        )
        [532] => Array(
            [time_start] => 09:00
            [time_end] => 11:30
            [notes] => 
        )
    )
    [day_2] => Array(
        [3747] => Array(
            [time_start] => 08:00
            [time_end] => 10:00
            [notes] => 
        )
    )
)

How do I sort the array in "day_1" based on the value of "time_start"?

The end result that I want to achieve is:

Array(
    [day_1] => Array(
        [3746] => Array(
            [time_start] => 08:00
            [time_end] => 11:00
            [notes] => 
        )
        [532] => Array(
            [time_start] => 09:00
            [time_end] => 11:30
            [notes] => 
        )
        [3744] => Array(
            [time_start] => 11:00
            [time_end] => 12:00
            [notes] => 
        )
    )
    [day_2] => Array(
        [3747] => Array(
            [time_start] => 08:00
            [time_end] => 10:00
            [notes] => 
        )
    )
)

I have tried:

foreach($array['day_1'] as $key => $value){
    $starttime[$key] = strtotime($value['time_start']);
}
array_multisort($starttime, SORT_ASC, $array['day_1']);

But its not sorted and it removes my array key as well.

  • 写回答

1条回答 默认 最新

  • doukuanyong1939 2017-06-27 20:21
    关注

    The solution using uasort function:

    // $arr is your initial array
    uasort($arr['day_1'], function($a, $b){
        return strcmp($a['time_start'], $b['time_start']);
    });
    
    print_r($arr);
    

    Demo link

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 WebSocket的问题
  • ¥15 WebSocket的问题
  • ¥15 centos上启动kylin后网页报错404
  • ¥20 使用hackrf进行信号收发时接收到的信号幅度太小
  • ¥15 WebSocket的问题
  • ¥15 BDSBAS-B1C和B1C信号有什么不同
  • ¥15 在半圆平面内随机生成点坐标
  • ¥15 系统容量变化的几种多址方式TDMA, CDMA,FDMA,OFDMA 对比,应该给的是一个曲线 图,随着系统容量的增加,几种多址方式性能的对比 图,MATLAB程序仿真折线图
  • ¥15 用visual Studio 写c ++只运行上一个旧代码的运行结果是怎么回事
  • ¥15 系统容量变化的几种多址方式(TDMA,FDMA,OFDMA,CDMA)对比(相关搜索:曲线图)